Pennsylvania · Battery

Proposed battery projects in Pennsylvania

There are 7 proposed battery projects in Pennsylvania's interconnection queue, totaling 1.02 GW of requested capacity. The largest is Shallow Seam BESS at 400 MW, and the median planned online year is 2024.

7
Proposed projects
1.02 GW
Requested capacity
145.7 MW
Average project size
2024
Median planned online year

All proposed battery projects in Pennsylvania

TypeRegionIA Status
Shallow Seam BESS
C24-233
BatteryNYISOClearfield—400 MW20242029
Erie East Energysusp.
AE2-299
BatteryPJMErieIA Executed160 MW20192026
ACE Development Company, LLC project
AG2-621
BatteryPJMBeaverSystem Impact Study150 MW20252023
Energy Mountain
AD2-077
BatteryPJMBucksIA Executed150 MW20182029
Poseidon Storage
AH1-249
BatteryPJMFayetteSystem Impact Study80 MW20252024
Lafayette Storage
AH1-206
BatteryPJMFayetteSystem Impact Study60 MW20252024
Momentum Gratz
AF1-040
BatteryPJMDauphinIA Executed20 MW20192024

Browse Pennsylvania's full interconnection queue. Compare with operating capacity: 4 operating storage plants in Pennsylvania. Nationwide: Storage plants nationwide.

Source: "Queued Up" (Rand et al., Lawrence Berkeley National Laboratory, 2026 edition). Data: LBNL backbone through December 31, 2025; ISO-region statuses refreshed monthly (last: July 2026); non-ISO West and Southeast as of the LBNL edition.